Pownall says 24-year-old Jacob Dowdy, of Upton, was pronounced dead at the scene, while 38-year-old Mike Lewis, of Wright, was taken to Campbell County Memorial Hospital where he was listed in good condition.

The preliminary investigation indicates that the power shovel was traveling up a ramp when it rolled back into the two pickup trucks.

Dowdy had been an employee of Thunder Basin Coal Co., Arch Coal's subsidiary that operates the mine, for about three years.